RuntimeError: maximum recursion depth exceeded while calling a Python object

[chenxiang2019]

Hi, all.

I'm trying to compile an experiment program which has very big table number(more than 1000 tables) using p4c-bm. However, when I start the mininet, the process raises an error shows that the following error:

...

  File "/usr/local/lib/python2.7/dist-packages/p4_hlir-0.9.44-py2.7.egg/p4_hlir/hlir/p4_tables.py", line 447, in _set_modified_hdrs
    _set_modified_hdrs(hlir, nt, full_modified_hdrs)
  File "/usr/local/lib/python2.7/dist-packages/p4_hlir-0.9.44-py2.7.egg/p4_hlir/hlir/p4_tables.py", line 447, in _set_modified_hdrs
    _set_modified_hdrs(hlir, nt, full_modified_hdrs)
  File "/usr/local/lib/python2.7/dist-packages/p4_hlir-0.9.44-py2.7.egg/p4_hlir/hlir/p4_tables.py", line 447, in _set_modified_hdrs
    _set_modified_hdrs(hlir, nt, full_modified_hdrs)
  File "/usr/local/lib/python2.7/dist-packages/p4_hlir-0.9.44-py2.7.egg/p4_hlir/hlir/p4_tables.py", line 447, in _set_modified_hdrs
    _set_modified_hdrs(hlir, nt, full_modified_hdrs)
  File "/usr/local/lib/python2.7/dist-packages/p4_hlir-0.9.44-py2.7.egg/p4_hlir/hlir/p4_tables.py", line 436, in _set_modified_hdrs
    for a, nt in entry_point.next_.items():
  File "/usr/lib/python2.7/collections.py", line 110, in items
    return [(key, self[key]) for key in self]
RuntimeError: maximum recursion depth exceeded while calling a Python object

This is a common error as writing Python script. Based on the error information, I set the maximum recursion depth by using sys.getrecursionlimit() in p4_tables.py and resolve this problem.

BTW, I have another question. What's the maximum table number supported by BMv2?

Thank you!